Method of using a kit pre-embedded in concrete

Abstract

This invention discloses a method for using a kit pre-embedded inside concrete, including a consumable component. The consumable component has an integrally formed inner cavity with threads on the cavity wall and an opening for the access of installation components. The kit mainly consists of a reusable component and a consumable component. The consumable component is simply fitted onto the reusable component by workers when installing each layer of formwork. The consumable component is left in the concrete when the workers remove the metal formwork. On-site installation is very simple, requires almost no additional labor, and effectively reduces labor costs.

Description

Technical Field

[0001] This invention relates to a method of using a kit pre-embedded inside concrete, belonging to the field of concrete construction. Background Technology

[0002] The current construction methods for installing edge protection at building structures, fixing formwork for repairing floor openings, installing ceiling lights, and installing window frames all involve drilling holes with an impact drill, then installing expansion bolts or mortise bolts, and finally securing the edge protection, repair formwork, lights, and window frames to the wall by tightening the nuts on the expansion bolts and the screws on the mortise bolts. This construction process is highly hazardous to workers. The strong impact of drilling holes can easily cause arm fatigue and injury, and the dust generated can harm the lungs if inhaled. Post-construction repairs are also troublesome. Expansion bolts protruding from the wall need to be cut off with a cutting machine, sealing the holes with concrete is difficult, and bolts left in the wall are prone to rust, leaving rust stains and affecting the building's appearance. Furthermore, the existing method of selecting the appropriate drill bit based on the installation specifications of the components requires frequent checks by construction workers to ensure the drilled hole diameter matches the size of the installed components. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a method for using a kit pre-embedded in concrete to solve the problem.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a method for using a kit pre-embedded in concrete, comprising a consumable part having an integrally formed inner cavity with an opening; a plurality of replacement parts with different apertures being provided in the inner cavity; each replacement part having a thread on its inner ring surface; the replacement part being fixed to the inner cavity by a fastener; and a snap-fit ​​connector being provided on the outer side of the opening of the inner cavity.

[0005] A turnover part, wherein the insertion end of the turnover part is provided with an annular recess, and the snap-fit ​​connector is provided with a protrusion corresponding to the recess; the protrusion will be embedded in the recess.

[0006] And includes the following steps;

[0007] Step 1: Optimize the template by pre-drilling the first hole for installing the required kit on the metal template used for pouring concrete to form the outer wall;

[0008] Step 2: Insert the insert end of the reusable part into the snap-fit ​​connector, so that the concave part of the reusable part snaps into the protruding part of the snap-fit ​​connector, thus forming a connection between the reusable part and the consumable part.

[0009] Step 3: Build a metal template in the required construction area for pouring concrete to form the outer wall of the concrete. Before pouring, insert the turnover parts and consumable parts connected in Step 2 into the first hole reserved in Step 1 with the first bolt and thread it to the screw hole of the turnover parts, so that the turnover parts and consumable parts are fixed on the metal template.

[0010] Step 4: Pour cement into the metal template built in step 3; the cement covers the reusable and consumable parts.

[0011] Step 5: After the cement has hardened and formed the concrete outer wall, unscrew the first bolt and remove the metal formwork.

[0012] Step 6: Use a hex wrench to rotate the bottom of the reusable part, causing it to rotate and thus allowing the slide entrance to engage with the locking block. Continue rotating to gradually lift the locking block along the slope of the slide, thereby separating the locking connector and reusable part from the consumable part through the pre-etched structure.

[0013] Step 7: Pass a long bolt through a protective plate, and then screw the long bolt into the inner cavity or onto the replacement part, so that the protective plate covers the concrete hole formed by the removal of the turnover part in Step 6.

[0014] Step 8; Repeat steps 6-7, and cover all the reusable parts with protective panels after removing them;

[0015] Step 9: When the component needs to be installed, remove and unscrew the long bolt, remove the protective plate, and then install the screws on the component into the inner cavity or the replacement part to complete the installation and fixing of the component.

[0016] Step 10; Based on step 9, according to the screw specifications of the installed component, if it is to be connected to the inner cavity, it is directly threaded to the inner cavity wall to fix the component.

[0017] Step 11: Based on step 9, according to the screw specifications of the installed component, if it is connected to a replacement part, the replacement part with the corresponding screw is placed into the inner cavity. Then, by inserting the limit bolt into the limit hole and then inserting the fastening bolt while rotating, the replacement part is fastened in the inner cavity. The component is fixed by the thread in the fastener.

[0018] Preferably, the cavity wall of the inner cavity has threads; the replacement part is a hollow cylinder, and the replacement part and the inner cavity are distributed in a concentric circle.

[0019] Preferably, a hexagonal limiting hole is provided on the bottom end face of several replacement parts, and a limiting bolt corresponding to the limiting hole is provided on the fastener; the limiting bolt passes through the limiting hole on the replacement part and is placed on the limiting hole; the fastener also includes a fastening bolt passing through the limiting bolt, and the fastening bolt is threaded on the consumable part.

[0020] Preferably, the tail end of the consumable part is hexagonal, and several limiting strips are distributed in a ring on the outer surface of the consumable part; the two sides of the limiting strips are inclined inward, and two double arc edges are formed from the middle to the side.

[0021] Preferably, the connector and the consumable part are integrally formed, the connector is hollow, the protrusion is disposed on the inner ring surface of the connector; the recess is an annular semi-circular groove; and the protrusion is an annular protrusion corresponding to the recess.

[0022] Preferably, a pre-engraved structure for separation is provided between the card connector and the consumable part; the pre-engraved structure includes a plurality of ring cuts; the beginning and end of each ring cut has a semi-circular protruding end, and the protruding end at the end of the tail has an acute-angled conical end, and the conical end at the tail and the protruding end at the beginning of the adjacent ring cut form an easy-tear area.

[0023] Preferably, the insertion end of the reusable part is frustum-shaped, and the insertion end will be inserted into the card connector; the bottom of the reusable part is hexagonal and has a screw hole on the bottom surface.

[0024] Preferably, a separation structure is provided between the insertion end of the reusable part and the snap-fit ​​connector; the separation structure includes an arc-shaped slide rail provided at the insertion end and a snap-fit ​​block provided on the inner annular surface of the snap-fit ​​connector; the snap-fit ​​block is located at the entrance of the slide rail.

[0025] Preferably, the bottom of the insertion end has a plug, and a base extends from one side of the plug; the base and the bottom surface of the insertion end form a slide; the card block has a notch for the base to be inserted; the width of the slide is greater than the width of the card block; the height of the slide from the inlet to the outlet gradually increases, making the slide inclined.

[0026] Beneficial effects

[0027] This invention kit mainly consists of reusable and consumable parts. The consumable parts are simply fitted onto the reusable parts by workers during each layer of formwork installation. The consumable parts are left in the concrete after the metal formwork is removed. On-site installation is very simple, requiring virtually no additional labor and effectively reducing labor costs. The kit can be effectively integrated with the structural wall, offering more controllable quality compared to existing technologies that use drilling holes for expansion bolts, while also avoiding damage to the structural reinforcement. Furthermore, suitable replacement parts can be selected and used according to usage requirements, eliminating the need for pre-drilling holes of the same diameter. Attached Figure Description

[0028] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the pre-assembled consumable parts and turnover parts in Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the pre-assembled consumable parts according to Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of a kit embedded in concrete according to Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram of the pre-assembled consumable parts and turnover parts in Embodiment 2 of the present invention;

[0033] Figure 5 This is a schematic diagram of the pre-assembled consumable parts in Embodiment 2 of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of a kit embedded in concrete in Embodiment 2 of the present invention;

[0035] Figure 7 This is a side view of the limiting strip of the present invention.

[0036] Figure 8 This is a schematic diagram of the structure of the consumable and replacement parts of the present invention;

[0037] Figure 9 This is a schematic diagram of the fastener structure of the present invention;

[0038] Figure 10 This is a front view schematic diagram of the separation structure of the present invention;

[0039] Figure 11 This is a side view of the detachable structure of the present invention;

[0040] Figure 12 This is a schematic diagram of the pre-etched structure of the present invention. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] Example 1

[0043] See Figure 3 A method of using a kit pre-embedded in concrete, comprising consumable part 1 and reusable part 2;

[0044] The consumable part 1 has an integrally formed inner cavity 11, the cavity wall of the inner cavity 11 has threads, and the inner cavity 11 has an opening for the access of the mounting component.

[0045] The tail end 12 of the consumable part 1 is hexagonal. The purpose of the hexagonal design is twofold: first, in the processing of the consumable part 1, the hexagonal shape will provide a position for the fixture to be fixed, thus providing production conditions for the drilling cavity 11; second, in the formed concrete outer wall, the hexagonal tail end is difficult to turn over in the concrete, thus avoiding the rotation of the installed part after being affected by external forces.

[0046] The outer side of the opening of the inner cavity 11 is provided with a snap connector 3 for connecting with the turnover piece 2.

[0047] The insertion end 21 of the reusable part 2 is frustoconical, allowing for better insertion into the connector 3. An annular recess 23, a semi-circular groove, is provided on the insertion end 21. The connector 3 has a corresponding protrusion 31; the protrusion 31 is an annular protrusion that embeds into the recess 23. This allows the reusable part 2 to rotate on the connector 3 after engagement. Furthermore, the connector 3 is designed as a thin shell, with a certain gap between the frustoconical insertion end 21 and the connector 3 at the ends. This allows the reusable part 2 to be easily removed even after engagement by pulling it at an angle. The tail 22 of the reusable part 2 also has a pre-drilled screw hole 24 for the installation of the first bolt 41. The tail end 22 of the turnover part 2 is hexagonal. The design of the tail end 22 of the turnover part 2 as hexagonal serves three purposes: first, it provides a clamping position that can be fixed during the processing, providing production conditions for milling the concave part 23; second, it can be used with a hexagonal plate to clamp the turnover part 2 during subsequent installation, preventing it from rotating with the first bolt 41; and third, it provides a good force application point to prevent slippage when separating the consumable part 1 and the turnover part 2.

[0048] See Figure 1-3 A method of using a kit pre-embedded inside concrete, comprising the following steps;

[0049] Step 1: Optimize template 4 by pre-drilling the first hole 42 for the required installation kit on the metal template 4 used for pouring concrete to form the outer wall. The existing casting template 4 can be used, eliminating the need to purchase a new template 4 and reducing replacement costs. The diameter of the first hole 42 must correspond to the diameter of the first bolt 41 to ensure smooth insertion. The position of the holes for the installation kit needs to be adjusted to correspond to the fixing points of the installed components (the pre-calculated positions are optimized in the manufacturing drawings by the draftsman).

[0050] Step 2: Insert the insertion end 21 of the reusable part 2 into the card connector 3, so that the recess 23 of the reusable part 2 engages with the protrusion 31 of the card connector 3, forming a connection between the reusable part 2 and the consumable part 1. This usage step can achieve the connection between the two without the aid of tools, and the connection can be made before construction, which facilitates the preparation before construction, improves construction efficiency, and can further shorten the construction period.

[0051] Step 3: Erect a metal formwork 4 in the required construction area for pouring concrete to form the outer concrete wall. Before pouring, connect the reusable part 2 and the consumable part 1 connected in Step 2 by inserting the first bolt 41 into the first hole 42 reserved in Step 1 and threading it into the screw hole 24 of the reusable part 2, so that the reusable part 2 and the consumable part 1 are fixed on the metal formwork 4. The construction personnel can quickly screw in the first bolt 41 with a handheld electric screwdriver, while the reusable part 2 is fixed on the other side with a hex wrench. The operation is simple and convenient.

[0052] Step 4: Pour cement X1 into the metal template 4 built in step 3. The cement covers the turnover part 2 and the consumable part 1.

[0053] Step 5: After the cement has solidified and formed the concrete outer wall X2, unscrew the first bolt 41 and remove the metal template 4.

[0054] Step 6: The construction personnel pull the turnover piece 2 at an angle, which will separate the recess 23 from the protrusion 31, thereby separating the turnover piece 2 from the snap connector 3.

[0055] Step 7: Pass a long bolt 51 through a protective plate 5, and then screw the long bolt 51 into the inner cavity 11 so that the protective plate 5 covers the concrete hole X3 formed by the removal of the turnover piece 2 in step 6.

[0056] Step 8; Repeat steps 6-7, remove all the turnover parts 2 and cover them with protective plates 5; This can protect the unused consumable parts 1 and prevent external impacts or other accidents from deforming the consumable parts 1 or from dust and cement from construction clogging the opening of the inner cavity 11, which would require subsequent cleaning.

[0057] Step 9: When the component needs to be installed, the construction worker uses an electric screwdriver to remove and unscrew the long bolt 51, remove the protective plate 5, and then install the screws on the component into the inner cavity 11 to complete the installation and fixing of the component.

[0058] Example 2

[0059] Based on Example 1, see Figure 6 , 89. The inner cavity 11 is provided with several replacement parts 6 of different apertures; each replacement part 6 has threads on its inner ring surface; to ensure that the replacement parts 6 of different apertures can be fixed in the inner cavity 11, a limiting hole 61 of the same size is reserved on the bottom end face of each hollow cylindrical replacement part 6, and then a fastener 7 passes through the limiting hole 61 and is threadedly connected to the inner cavity 11, thereby fixing the replacement part 6 in the inner cavity 11, so that the replacement parts 6 and the inner cavity 11 are distributed in a concentric circle. Of course, the aperture of all replacement parts 6 is smaller than the aperture of the inner cavity 11 to avoid the replacement parts 6 being unable to be installed in the inner cavity 11. The preferred limiting hole 61 is hexagonal, and the fastener 7 includes a hexagonal limiting bolt 71 and a fastening bolt 72. When the hexagonal limiting bolt 71 is inserted into the limiting hole 61, the replacement part 6 cannot rotate while the limiting bolt 71 is fixed in place. This prevents the replacement part 6 from rotating along with the screws of the mounting component during installation, which could make it difficult to screw the screws into the replacement part 6 or cause the installed component to rotate due to external forces. To fix the limiting bolt 71, a hole A for the fastening bolt 72 to be inserted is provided in the limiting bolt 71, and a hole B is pre-drilled in the inner cavity 11 for the fastening bolt 72 to be threaded. Thus, when the fastening bolt 72 is inserted into the hole A of the limiting bolt 71, it is fixed to the hole B in the inner cavity 11, thereby fixing the limiting bolt 71 to the inner cavity 11.

[0060] See Figure 6-7 Furthermore, several limiting strips 12 are distributed in a ring on the outer surface of the consumable part 1. The two sides of the limiting strips 12 are inclined inward, and two double arc edges are formed from the middle to the side. Because the two sides of the limiting strips 12 are inclined inward, the consumable part 1 will have a larger force-bearing area when subjected to force in the concrete outer wall, which prevents the consumable part 1 from rotating. Moreover, the inward inclination of both sides makes it difficult for the consumable part 1 to rotate when subjected to force in either the forward or reverse direction. At the same time, the designed double arc edges can generate a larger resistance moment, preventing the limiting strips 12 from deforming under force.

[0061] See Figure 12 To further facilitate the separation of the reusable part 2 and the consumable part 1, a pre-engraved structure 8 for separation is designed on the connector 3. The pre-engraved structure 8 includes several circumferential cuts 81. The beginning and end of each circumferential cut 81 have semi-circular protruding ends 82, and the protruding end 82 at the end has an acute-angled conical end 83. It is worth mentioning that the circumferential cuts 81 can be cut by producing a corresponding cutter according to the shape of the circumferential cuts 81 using existing circumferential cutting equipment to meet the above requirements. The width between the conical end 83 at the end and the protruding end 82 at the beginning of the adjacent circumferential cut 81 is shorter, and the conical opening of the conical end 83 is more prone to breakage, thus forming an easy-tear area D.

[0062] See Figure 11-12To ensure that the annular cut 81 breaks under stress, a separation structure is provided between the insertion end 21 of the reusable part 2 and the snap-fit ​​connector 3. The separation structure includes an arc-shaped slide S provided on the insertion end 21 and a snap-fit ​​block 32 provided on the inner annular surface of the snap-fit ​​connector 3. The bottom of the insertion end 21 has a plug 212, and an arc-shaped base 211 extends from one side of the plug 212; the base 211 and the bottom surface of the insertion end 21 form the slide S. Furthermore, the width of the slide S is greater than the width of the locking block 32 so that the locking block 32 can fall into the slide S; the height of the slide S gradually increases from the entrance to the exit, making the slide S inclined. In this way, when the turnover piece 2 rotates, the slide S will guide the locking block 32 (locking connector 3) to move gradually, causing the locking connector 3 to break through the pre-cut structure 8, thereby causing the locking connector 3 to detach from the consumable piece 1, and then causing the turnover piece 2 to separate from the locking connector 3; preferably, the inclination of the slide S is 20°. The 20° inclination slope can prevent the locking connector 3 from separating from the consumable piece 1 when the turnover piece 2 rotates slightly, and can also ensure that the locking block 32 can smoothly separate the two after passing through the complete slide S. To facilitate the initial installation of the locking block 32 and the slide rail S, the slide rail S is designed as an arc-shaped slide rail S with a notch X, and the locking block 32 is placed in the notch X, which is the entrance of the locking block 32; of course, the direction of the rotating turnover part 2 must correspond to the direction from the entrance to the exit of the slide rail S to ensure that the locking connector 3 can be disengaged smoothly. To avoid operational errors by construction personnel, the rotation direction arrow can be marked on the locking connector 3.

[0063] See Figure 4-12 A method of using a kit pre-embedded inside concrete, comprising the following steps;

[0064] Step 1: Optimize the template 4 by pre-drilling the first hole for the required installation kit on the metal template 4 used for pouring concrete to form the outer wall. The existing casting template 4 can be used, eliminating the need to purchase a new template 4 and reducing replacement costs. The diameter of the first hole 42 must correspond to the diameter of the first bolt 41 to ensure smooth insertion. The position of the holes for the installation kit must be adjusted to correspond to the fixing points of the components to be installed.

[0065] Step 2: Insert the insertion end 21 of the reusable part 2 into the snap-fit ​​connector 3, so that the recess 23 of the reusable part 2 snaps into the protrusion 31 of the snap-fit ​​connector 3, forming a connection between the reusable part 2 and the consumable part 1. It is worth noting that the snap-fit ​​block 32 needs to be aligned with the notch X before snapping it in, so that the reusable part 2 and the consumable part 1 can be snapped together. This usage step can achieve the connection between the two without the aid of tools, and the connection can be made before construction, which facilitates the preparation before construction, improves construction efficiency, and can further shorten the construction period.

[0066] Step 3: Erect a metal formwork 4 in the required construction area for pouring concrete to form the outer concrete wall. Before pouring, connect the reusable part 2 and the consumable part 1 connected in Step 2 by inserting the first bolt 41 into the first hole 42 reserved in Step 1 and threading it into the screw hole 24 of the reusable part 2, so that the reusable part 2 and the consumable part 1 are fixed on the metal formwork 4. The construction personnel can quickly screw in the first bolt 41 with a handheld electric screwdriver, which is simple and convenient.

[0067] Step 4: Pour cement X1 into the metal template 4 built in step 3. The cement covers the turnover part 2 and the consumable part 1.

[0068] Step 5: After the cement has solidified to form a concrete outer wall X2, and the dry cement outer wall has fixed the consumable part 1, unscrew the first bolt 41 and remove the metal template 4.

[0069] Step 6: Use a hex wrench to rotate the bottom of the turnover piece 2, causing the turnover piece 2 to rotate, thereby causing the entrance of the slide S to engage with the locking block 32. Continue to rotate so that the locking block 32 is gradually lifted along the slope of the slide S, thereby separating the locking connector 3 and the turnover piece 2 from the consumable piece 1 through the easy-tear area D of the pre-cut structure 8.

[0070] Step 7: Pass the long bolt 51 through the second hole 52 of a protective plate 5, and then screw the long bolt 51 into the inner cavity 11 or the replacement part 6, so that the protective plate 5 covers the concrete hole X3 formed by the removal of the turnover part 2 in step 6.

[0071] Step 8; Repeat steps 6-7, remove all the turnover parts 2 and cover them with protective plates 5; This can protect the unused consumable parts 1 and prevent external impacts or other accidents from deforming the consumable parts 1 or from dust and cement from construction clogging the opening of the inner cavity 11, which would require subsequent cleaning.

[0072] Step 9: When the component needs to be installed, the construction worker uses an electric screwdriver to remove and unscrew the long bolt 51, remove the protective plate 5, and then install the screws on the component into the inner cavity 11 or the replacement part 6 to complete the installation and fixing of the component.

[0073] Step 10; Based on step 9, according to the screw specifications of the installed component, if the screw of the installed component is the largest specification, it will be directly connected to the inner cavity 11. The screw will be threaded to the cavity wall of the inner cavity 11 to fix the component.

[0074] Step 11: Based on step 9, according to the screw specifications of the installed component, if the screw of the installed component is of other specifications, select the corresponding replacement part 6 for connection. Place the replacement part 6 with the corresponding screw into the inner cavity 11, and then insert the limit bolt 71 into the limit hole 61 and then insert the fastening bolt 72 while rotating to fasten the replacement part 6 in the inner cavity 11. The component is fixed by the thread in the fastener 7.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method of using a kit pre-embedded inside concrete, characterized in that: The device includes a consumable part having an integrally formed inner cavity with an opening; the inner cavity contains several replacement parts with different apertures; each replacement part has a thread on its inner ring surface; the replacement part is fixed to the inner cavity by a fastener; and a snap-fit ​​connector is provided on the outside of the opening of the inner cavity. A turnover part, wherein the insertion end of the turnover part is provided with an annular recess, and the snap-fit ​​connector is provided with a protrusion corresponding to the recess; the protrusion will be embedded in the recess. And includes the following steps; Step 1: Optimize the template by pre-drilling the first hole for installing the required kit on the metal template used for pouring concrete to form the outer wall; Step 2: Insert the insert end of the reusable part into the snap-fit ​​connector, so that the concave part of the reusable part snaps into the protruding part of the snap-fit ​​connector, thus forming a connection between the reusable part and the consumable part. Step 3: Build a metal template in the required construction area for pouring concrete to form the outer wall of the concrete. Before pouring, insert the turnover parts and consumable parts connected in Step 2 into the first hole reserved in Step 1 with the first bolt and thread it to the screw hole of the turnover parts, so that the turnover parts and consumable parts are fixed on the metal template. Step 4: Pour cement into the metal template built in step 3; the cement will cover the reusable and consumable parts. Step 5: After the cement has hardened and formed the concrete outer wall, unscrew the first bolt and remove the metal formwork. Step 6: Use a hex wrench to rotate the bottom of the reusable part, causing it to rotate and thus allowing the slide entrance to engage with the locking block. Continue rotating to gradually lift the locking block along the slope of the slide, thereby separating the locking connector and reusable part from the consumable part through the pre-etched structure. Step 7: Pass a long bolt through a protective plate, and then screw the long bolt into the inner cavity or onto the replacement part, so that the protective plate covers the concrete hole formed by the removal of the turnover part in Step 6. Step 8; Repeat steps 6-7, and cover all the reusable parts with protective panels after removing them; Step 9: When the component needs to be installed, remove and unscrew the long bolt, remove the protective plate, and then install the screws on the component into the inner cavity or the replacement part to complete the installation and fixing of the component. Step 10; Based on step 9, according to the screw specifications of the installed component, if it is to be connected to the inner cavity, it is directly threaded to the inner cavity wall to fix the component. Step 11: Based on step 9, according to the screw specifications of the installed component, if it is connected to a replacement part, the replacement part with the corresponding screw is placed into the inner cavity. Then, by inserting the limit bolt into the limit hole and then inserting the fastening bolt while rotating, the replacement part is fastened in the inner cavity. The component is fixed by the thread in the fastener.

2. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The inner cavity wall has threads; the replacement part is a hollow cylinder, and the replacement part and the inner cavity are distributed in concentric circles.

3. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: Each of the replacement parts has a hexagonal limiting hole on its bottom end face, and the fastener has a limiting bolt corresponding to the limiting hole; the limiting bolt passes through the limiting hole on the replacement part and is positioned on the limiting hole; the fastener also includes a fastening bolt that passes through the limiting bolt, and the fastening bolt is threaded onto the consumable part.

4. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The tail end of the consumable part is hexagonal, and several limiting strips are distributed in a ring on the outer surface of the consumable part; the two sides of the limiting strips are inclined inward, and two double arc edges are formed from the middle to the side.

5. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The connector and the consumable part are integrally formed. The connector is hollow and the protrusion is provided on the inner ring surface of the connector. The recess is an annular semi-circular groove and the protrusion is an annular protrusion corresponding to the recess.

6. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The card connector and the consumable part are provided with a pre-etched structure for separation; the pre-etched structure includes a number of ring cuts; the beginning and end of each ring cut has a semi-circular protruding end, and the protruding end at the end of the tail has an acute-angled conical end, and the conical end at the tail and the protruding end at the beginning of the adjacent ring cut form an easy-tear area.

7. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The insertion end of the reusable part is frustum-shaped and will be inserted into the card connector; the bottom of the reusable part is hexagonal and has a screw hole on the bottom surface.

8. The method of using a kit pre-embedded in concrete according to claim 1, characterized in that: The insert end of the reusable part is provided with a separation structure between it and the snap-fit ​​connector; the separation structure includes an arc-shaped slide at the insert end and a snap-fit ​​block on the inner annular surface of the snap-fit ​​connector; the snap-fit ​​block is located at the entrance of the slide.

9. The method of using a kit pre-embedded in concrete according to claim 7, characterized in that: The insertion end has a plug at its bottom and a base extending from one side of the plug; the base and the bottom surface of the insertion end form a slide; the card block has a notch for the base to be inserted; the width of the slide is greater than the width of the card block; the height of the slide gradually increases from the inlet to the outlet, making the slide inclined.

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